Too old for competitive ice dance?

I've been skating for 2.5 yrs once a wk( parents won't let me go more). Anyway I am up to freestyle 4 but I wanted to ask is it too late for me to start training fr competitive ice dance Nx year when I turn 18? I want to be able to go to nationals and worlds not adult figure skating but normal competitive figure skating. I know the following ice dances well: European waltz, Fourteen step, foxtrot, Dutch waltz, canasta tango, Kolian, rocker foxtrot, Rhythm blues, swing dance, Cha Cha, willow waltz, ten fox. Basically from preliminary to pre silver. So could I do it? I'd be able to train for 3-4 hrs a day 4-5 times a wk.